12631767811 has 16 divisors (see below), whose sum is σ = 14079098880. Its totient is φ = 11254361760.

The previous prime is 12631767809. The next prime is 12631767817. The reversal of 12631767811 is 11876713621.

It is a cyclic number.

It is not a de Polignac number, because 12631767811 - 2¹ = 12631767809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12631767817) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 113430 + ... + 195268.

It is an arithmetic number, because the mean of its divisors is an integer number (879943680).

Almost surely, 2^12631767811 is an apocalyptic number.

12631767811 is a deficient number, since it is larger than the sum of its proper divisors (1447331069).

12631767811 is a wasteful number, since it uses less digits than its factorization.

12631767811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82266.

The product of its digits is 84672, while the sum is 43.

The spelling of 12631767811 in words is "twelve billion, six hundred thirty-one million, seven hundred sixty-seven thousand, eight hundred eleven".